One of the AAN's recommendations for the Choosing Wisely campaign was to not perform brain imaging for patients presenting to the ED with recurrence of their baseline primary headache disorder," she said.

Patients were at least 18 years old and met the International Classification of Headache Disorders criteria for migraine with or without aura as well as the International Classification of Headache Disorders, Second Edition, criteria for migraine with or without aura; 90% of patients were female, and 69% had experienced migraine for more than 10 years.

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